EP2735417A1 - Procédé de moulage par injection de pièces moulées en matière synthétique thermo-plastique - Google Patents

Procédé de moulage par injection de pièces moulées en matière synthétique thermo-plastique Download PDF

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Publication number
EP2735417A1
EP2735417A1 EP13005380.4A EP13005380A EP2735417A1 EP 2735417 A1 EP2735417 A1 EP 2735417A1 EP 13005380 A EP13005380 A EP 13005380A EP 2735417 A1 EP2735417 A1 EP 2735417A1
Authority
EP
European Patent Office
Prior art keywords
plastic melt
cavity
plastic
injected
melt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13005380.4A
Other languages
German (de)
English (en)
Inventor
Helmut Eckardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wittmann Battenfeld GmbH
Original Assignee
Wittmann Battenfeld GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wittmann Battenfeld GmbH filed Critical Wittmann Battenfeld GmbH
Publication of EP2735417A1 publication Critical patent/EP2735417A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B29C45/1639—Removable partitions between adjacent mould cavity portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • B29C2045/1654—Making multilayered or multicoloured articles having a "sandwich" structure whereby the core material is penetrating through the skin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • B29C45/1711—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles and removing excess material from the mould cavity by the introduced fluid, e.g. to an overflow cavity

Definitions

  • the solution of this object by the invention is characterized in that the propagation of the second plastic melt (core component) in the first plastic melt (skin component) in a defined direction or in a defined range is determined by the fact that before or during the injection of the second plastic melt in the first plastic melt is a region of reduced pressure is generated and / or that before or during the injection of the second plastic melt, the viscosity of the second plastic melt is increased.
  • a further variant provides that the generation of the region of reduced pressure takes place by a part of the wall of the cavity is displaced with already injected first plastic melt, so that increases the volume of the cavity.
  • the second plastic melt is preferably provided with a reinforcing agent.
  • reinforcing fibers may be provided, preferably in the form of carbon fibers or glass fibers.
  • Fig. 7 shows that the same effect can be generated by a resistance element 8 in the form of a flow brake.
  • the resistance element 8 is first placed in an advanced, reaching into the cavity position. The first plastic material A is injected (from the left). Then the resistance element 8 is withdrawn (see arrow direction in FIG Fig. 7a ). The flow resistance consequently drops, so that a pressure drop is generated, which in turn creates the preferential direction for the second plastic melt B to be injected, which is here again injected perpendicular to the plane of the drawing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP13005380.4A 2012-11-27 2013-11-15 Procédé de moulage par injection de pièces moulées en matière synthétique thermo-plastique Withdrawn EP2735417A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012023112.1A DE102012023112A1 (de) 2012-11-27 2012-11-27 Verfahren zum Spritzgießen von Kunststoff-Formteilen aus thermoplastischem Kunststoff

Publications (1)

Publication Number Publication Date
EP2735417A1 true EP2735417A1 (fr) 2014-05-28

Family

ID=49666918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13005380.4A Withdrawn EP2735417A1 (fr) 2012-11-27 2013-11-15 Procédé de moulage par injection de pièces moulées en matière synthétique thermo-plastique

Country Status (2)

Country Link
EP (1) EP2735417A1 (fr)
DE (1) DE102012023112A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246986A (zh) * 2017-08-17 2020-06-05 F·威斯特法尔 由被设计为空心体的预制件生产部件的方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1370075A (en) * 1972-04-20 1974-10-09 Ici Ltd Injection moulding
US4029454A (en) * 1973-09-25 1977-06-14 Bernard Leon Monnet Injection molding machine for composite articles
US4174413A (en) * 1976-07-27 1979-11-13 Asahi-Dow Limited Multi-layered molded articles
EP0393315A2 (fr) * 1989-04-21 1990-10-24 Ferromatik Milacron Maschinenbau GmbH Procédé pour mouler par injection des pièces en matière plastique remplies de liquide et appareil pour la réalisation du procédé
DE19627495A1 (de) * 1996-07-08 1998-01-15 Bauer Engineering Gmbh Verfahren zur Herstellung von Formteilen aus zwei unterschiedlichen Medien
EP1174241A2 (fr) * 2000-07-14 2002-01-23 Canon Kabushiki Kaisha Produit moulé en résine à structure multicouche et procédé de fabrication d'un produit moulé en résine à structure multicouche
WO2005002826A1 (fr) * 2003-07-01 2005-01-13 Ems-Chemie Ag Element plastique moule par injection comportant une zone rigide et une zone articulee et utilisation de cet element
DE202004011596U1 (de) * 2004-07-21 2005-12-08 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Verstelleinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234302B2 (ja) * 1982-12-30 1990-08-02 Toshin Steel Co Koseidopurasuchitsukuseibojotainoseikeihoho
DE3720211A1 (de) * 1987-06-17 1988-12-29 Bayer Ag Vorrichtung und verfahren zum herstellen eines kunststoff-verbundteils

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1370075A (en) * 1972-04-20 1974-10-09 Ici Ltd Injection moulding
US4029454A (en) * 1973-09-25 1977-06-14 Bernard Leon Monnet Injection molding machine for composite articles
US4174413A (en) * 1976-07-27 1979-11-13 Asahi-Dow Limited Multi-layered molded articles
EP0393315A2 (fr) * 1989-04-21 1990-10-24 Ferromatik Milacron Maschinenbau GmbH Procédé pour mouler par injection des pièces en matière plastique remplies de liquide et appareil pour la réalisation du procédé
DE19627495A1 (de) * 1996-07-08 1998-01-15 Bauer Engineering Gmbh Verfahren zur Herstellung von Formteilen aus zwei unterschiedlichen Medien
EP1174241A2 (fr) * 2000-07-14 2002-01-23 Canon Kabushiki Kaisha Produit moulé en résine à structure multicouche et procédé de fabrication d'un produit moulé en résine à structure multicouche
WO2005002826A1 (fr) * 2003-07-01 2005-01-13 Ems-Chemie Ag Element plastique moule par injection comportant une zone rigide et une zone articulee et utilisation de cet element
DE202004011596U1 (de) * 2004-07-21 2005-12-08 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Verstelleinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246986A (zh) * 2017-08-17 2020-06-05 F·威斯特法尔 由被设计为空心体的预制件生产部件的方法

Also Published As

Publication number Publication date
DE102012023112A1 (de) 2014-05-28

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